Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 105mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke105 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S
A 105 mm body stroke and a narrow 20 mm adjuster make the MAJ20X105-20S easy to dial in when the final reach is known only within about 20 mm; the external stop sets the extend end anywhere from 85 to 105 mm at commissioning. Double-acting air moves the rod out and back under power.
At 0.5 MPa this bore 20 cylinder pushes 157 N and retracts with 132 N, enough to eject or seat light parts cleanly. The stainless barrel and hard-chrome 8 mm rod cope with splash and humidity, the fixed anti-impact pad cushions both stroke ends, and the magnet that ships as standard carries CMSG / DMSG / EMSG switches for end-of-stroke signals. Plan on about 94 N of the rating for the actual job and the cylinder will start and stop smoothly.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 105 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 300 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×105 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S Is Used
Filling-line lid press
Snaps caps onto 200 ml dairy cups inside a 20 mm tolerance, with the stop screw set once during line commissioning.
Checkweigher reject gate
Flicks overweight packs off a checkweigher belt; 157 N at 0.5 MPa covers the 105 mm sweep across the lane without hesitation.
Tote stopper gate
Halts tote bins at a manual pick face on a roller conveyor; the trim screw sets the gate rise between 85 and 105 mm to match bin height.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S the Right Cylinder?
Set the 20 mm window once the jig is proven - the stop trims the extend end only, never lengthens it past 105 mm, and it holds position mechanically rather than pneumatically; with air off the piston can still be nudged along. Smaller MAJ16 versions push 100.5 N at 0.5 MPa and larger MAJ25 units 245.3 N, all with 1/8" ports. Choose an FA flange or LB foot, add an I or Y knuckle for a swivelling link, and keep side loads minimal over the 105 mm travel on the 8 mm rod.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X105-20S FAQ
Push is 157 N and pull 132 N at 0.5 MPa; at 0.7 MPa the push climbs to 220 N, and the theoretical ceiling is 32 kgf at 1.0 MPa. It runs 30-800 mm/s on air at 0.15-1.0 MPa (22-145 psi), takes 1.5 MPa (215 psi) proof pressure, and ports are 1/8".
Yes, within reason. The stainless-steel barrel and 20 um hard-chrome plated rod resist rust and splash far better than painted-steel minis, and the riveted aluminium covers seal the tube reliably. It suits damp food, beverage and outdoor duties, but avoid submersion, steam cleaning and aggressive chemicals.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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